207.01(1) When an employee is performing maintenance or repairs on a hoisting apparatus that is raised from the ground by means of another hoisting apparatus, other than outriggers or stabilizers, an employer shall ensure that the hoisting apparatus is adequately blocked.

207.01(2)An employer shall ensure that an employee does not work under or go under the raised parts of a hoisting apparatus unless the parts are adequately blocked, or the hoisting apparatus is raised by its outriggers or stabilizers, and no employee shall work under or go under the raised parts unless the parts are adequately blocked or the hoisting apparatus is raised by its outriggers or stabilizers.